Accession Number : AD0688517

Title :   INVESTIGATION OF PARTIALLY COMPACTED WEIGHT OF CONCRETE AS A MEASURE OF WORKABILITY. REPORT 1. PRELIMINARY TESTS.

Descriptive Note : Technical rept.,

Corporate Author : ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MISS

Personal Author(s) : Mather,Bryant

Report Date : APR 1962

Pagination or Media Count : 36

Abstract : Apparatus for performing the compacting-factor test as described in British Standard 1881:1952 was constructed, and two series of tests were made to determine the degree to which variation in partially compacted weight of concrete specimens can be used as a measure of workability. In the first series of tests a number of batches of each of two concrete mixtures having 1-1/2- and 2-1/2-in. slumps, respectively, were tested. In the second series the water content of a nominal 2-in.-slump mixture was varied to give seven mixtures with slumps ranging from 0 to 8 in. It is concluded that the net, struck, partially compacted weight of concrete in a suitable mold, filled by discharge to overflowing in a standard manner, could form the basis of control of workability in the laboratory or in the field, provided the concrete has a slump that does not normally exceed 3 in. (Author)

Descriptors :   (*CONCRETE, NONDESTRUCTIVE TESTING), (*COMPACTING, CONCRETE), TEST METHODS, TEST EQUIPMENT, MIXTURES, WATER, CEMENTS, DENSITY, WEIGHT, PENETRATION

Subject Categories : Ceramics, Refractories and Glass
      Construction Equipment, Materials & Supplies

Distribution Statement : APPROVED FOR PUBLIC RELEASE